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Glossary

Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.

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Becker Muscular Dystrophy(also: BMD)
A genetic neuromuscular disorder caused by mutations in the dystrophin gene on the X chromosome, resulting in progressive muscle weakness and wasting. Becker Muscular Dystrophy is similar to Duchenne Muscular Dystrophy but generally has a later onset (typically in the teens or…
Blue Cone Monochromatism(also: BCM, S-cone Monochromacy)
A rare inherited vision condition in which only the blue (short-wavelength) cones function, resulting in severely reduced color vision, reduced visual acuity, photophobia, and nystagmus. Affected individuals see the world in shades of blue and yellow and typically benefit from…
Borderline Intellectual Functioning(also: BIF, borderline intellectual disability, slow learners)
A condition describing individuals with IQ scores roughly between 70 and 85—above the diagnostic threshold for intellectual disability (IQ below 70) but below the neurotypical range. Representing about 13.6% of the general population, BIF individuals typically have working…
Bradykinesia(also: Slowness of Movement)
Bradykinesia is a motor symptom characterized by slowness of movement and a progressive reduction in the speed and amplitude of repetitive actions. It is one of the cardinal symptoms of Parkinson's disease and directly affects a person's ability to interact with digital devices…

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